Events leading up to the discovery of the rings of Uranus are described. The methods used and the logic behind the methods are explained. Data collected to prove the existence of the rings are outlined and theories concerning the presence of planetary rings are presented. (AJ)

Summarizes methods used in astro-archaeology, and illustrates the type of results that may be obtained with examples from the prehistoric sites of Stonehenge, Eqypt, and Nasca (Peru). (JR)

X-ray emitting bodies orbiting stars have been located. Research on black holes has brought out many characteristics of these X-ray emitting bodies. (PS)

Summarizes the discussions and research presented at the Lunar and Planetary Science Conference pertaining to the study of meteorites. (MR)

Discusses the process of star formation. Infrared and radio astronomy, particularly microwave astronomy is used to provide information on different stages of stellar formation. The role of dust and gas which swirl through the interstellar regions of a galaxy and the collapse of a cloud in star formation are also presented. (HM)

Discusses a summary of research pertaining to the Martian data from the Viking mission. This is a summary of some of the papers presented at the Lunar and Planetary Science Conference. (MR)

Discusses and summarizes papers on lunar geology and volcanism presented at the Lunar and Planetary Science Conference. (MR)

Reviews current theories concerning the physics of the sun. (SL)

Six articles review current understanding and research in solar physics. Included are topics on sunspots, the corona, solar flares, solar waves, and solar-energy generation. Also included is a resume of physical data relating to the sun. (SL)

A brief summary. Topics include: solid crystals, nonlinear physics, collective phenomena, heavy-ion physics, astrophysics, and particle physics. (BB)

Discusses the efforts which have been accomplished in extragalactic astronomy (the study of bodies and systems beyond the Milky Way) since 1929. Some of the most perplexing problems of extragalactic astronomy such as the missing mass of the galaxies are also discussed. (HM)

Presents a description of the world's largest radio/radar antenna, the Areciba Observatory in Puerto Rico. Activities at the observatory are discussed as well as the scientific research in the field of radio astronomy. (SA)

Discusses the birth of the universe and its death. Whether the universe is closed or open is also discussed. (HM)

Presented is one of a series of publications of National Aeronautics and Space Administration (NASA) facts about the exploration of Mars. The Viking mission to Mars, consisting of two unmanned NASA spacecraft launched in August and September, 1975, is described. A description of the spacecraft and their paths is given. A diagram identifying the…